If you have to use FL Studio on a device with limited screen size or resolution, and have the Mixer resized to it's shortest height, the control knobs for the Mixer track Parametric EQ are not displayed. To quickly gain access to them, with the focus on the Mixer panel, just hit Enter, which will maximize the Mixer and display the Parametric EQ knobs. Hit Enter again to return the Mixer to the shortened height.
For years I had to manually resize the Mixer if I wanted to use the Parametric Equalizer's knobs as I totally forgot about the default panel minimize and maximize functions. Doh!
Hit Enter to Access Mixer Track Parametric EQ knobs
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